1. Check the Obvious:
* Fluid Level: The most common cause is simply low washer fluid. Top off the reservoir.
* Frozen Lines (if applicable): In cold climates, the washer fluid lines might be frozen. Let the vehicle thaw completely before proceeding.
* Clogged Nozzle: The nozzle itself might be clogged with debris. Carefully try to clear the nozzle using a small needle or straightened paperclip. Be gentle to avoid damaging it.
2. Inspect the Hose and Connections:
* Hose Leaks or Kinks: Examine the hose running from the reservoir to the sprayer nozzle. Look for cracks, kinks, or loose connections. If you find a leak, you'll need to replace the section of hose. Kinks can be straightened (carefully!).
* Connection at the Nozzle: Check where the hose attaches to the nozzle. It might be loose or disconnected.
3. Test the Pump:
* Listen for the Pump: When you activate the rear washer, you should hear the pump running. If you don't hear it, the pump might be faulty.
* Visual Inspection (if accessible): The pump location varies depending on the specific Explorer model; consult your repair manual for its location. Sometimes, you can visually inspect the pump for damage or debris.
4. Check the Fuse (if pump is not running):
* Consult Your Owner's Manual: Locate the fuse box diagram in your owner's manual to identify the fuse for the rear washer system. Check the fuse with a test light or multimeter. Replace it if it's blown.
5. More Advanced Troubleshooting (if necessary):
* Pump Replacement: If the pump is faulty, you'll need to replace it. This usually involves removing the pump from its location (refer to a repair manual for specifics) and installing a new one.
* Wiring Issues: If the pump isn't getting power, there might be a problem with the wiring. This requires more advanced electrical troubleshooting skills and often involves a multimeter to check for continuity and voltage.
Important Notes:
* Repair Manual: A repair manual specific to your 2002 Ford Explorer is highly recommended. It will provide detailed diagrams, instructions, and torque specifications. You can find these online (like at Haynes or Chilton) or at auto parts stores.
* Safety: Disconnect the battery negative terminal before working on any electrical components.
* Professional Help: If you're not comfortable performing these repairs yourself, take your Explorer to a qualified mechanic.
By systematically checking these steps, you should be able to pinpoint the cause of the rear windshield washer sprayer problem and get it working again. Remember to always refer to your repair manual for specific details related to your vehicle's model and trim level.
